Oberon | Oberon parser , code model

Oberon is a C++ library typically used in Programming Style applications. Oberon has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

This project started out as an Oberon-07 parser, code model and transpiler written in C++ and Qt, with the goal to build tools to better understand the Lola-2 compiler and to automatically translate it to maintainable C++ with minimal dependencies to other C++ libraries, and with no dependencies to the Oberon System (see the Lola and LolaCreator repositories). Oberon turned out to be a language very well suited for compiler front and backend experiments because it is decently simple but still powerful enough to build real-world software, as it supports pointers, static and stack based data structures and call by reference, which are not usually available with scripting languages. In consequence, an other goal of this project is to study the feasibility of reusing LuaJIT as a backend for statically typed programming languages like Oberon (see this article). The current implementation of the compiler is able to map full Oberon+ to LuaJIT, CIL/ECMA-335 bytecode and C99 source code, and run with decent performance (see Linux report and Windows report). There is also a compatible version of the Oberon System, as well as a powerful IDE with semantic navigation and source-level debugging (see below). During my work with Oberon and systems implemented in Oberon, I kept asking myself what properties the language would need to have so that I could use it for my own systems too, without giving up the goal of making it as simple as possible. From these considerations a new language emerged, which I call Oberon+ (i.e. "Oberon with extensions", abbreviated OBX); it is a general-purpose, procedural and object-oriented programming language in the tradition of and based on Oberon-07, Oberon-2 and Oberon 90, with all the elements of these languages, plus generic modules, enumerations, and many additional simplifications such as support for lower case keywords, optional semicolons, and flexible declaration sequences. See the language report and the dedicated language site for more information. The compiler supports both, Oberon+ as well as most of the syntax and semantics of the previous Oberon versions. For representative examples of Oberon+ see the Are-we-fast-yet benchmark suite migrated to Oberon+. It also demonstrates generic programming with collections and iterators.